Update staging-deploy.yml

feat: added location of Gemfile.lock to speed up build.

Author: regulate-tech

.github/workflows/staging-deploy.yml

@@ -31,6 +31,7 @@ jobs:
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: '3.3'
+          gemfile-path: docs/Gemfile.lock 
           bundler-cache: true
 
     # *** MODIFIED STEP 1: ADD working-directory ***
@@ -63,4 +64,4 @@ jobs:
         uses: actions/deploy-pages@v4
         with:
           # CRITICAL STEP: Deploy to the 'staging' path within GitHub Pages
-          target_path: staging
+          target_path: staging